工程量清单是招标文件的组成部分,是投标活动的这样依据,其组成不包括()。
参考答案:直接工程费用清单
已知五个数:1,3,2,4,5,那么它们的( )
A.方差为4
B.方差为10
C.中位数为2
D.平均数为3
What do you do on Sundays? [ ]
A. I often watch TV.
B. I often play computer games.
C. I often do homework.